William h



UNITED STATES PATENT OEEICE.`

WILLIAM H. BABOOCK, OF ALTON, IOWA, ASSIGNOR OF ONE-HAIJF TO PETERGOEBLE, OF SAME PLACE.

BOLT-LOCK.

SPECIFICATION forming part of Letters Patent No. 333,718, dated January5, 1886.

Application filed September 1, 1885. Serial No. 175,911. (No model.) Y

To all whom t may concern:

Be it known that I, WILLIAM H. BABoocK, acitizen ofthe United States,residing at Alton, in the county ol' Sioux and State of Iowa, haveinvented certain new and useful Improvements in Bolt-Locks; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and iignres of referencemarked thereon, which form a part of this specification.

My invention relates to improvements in bolt securers or locks, and isdesigned to obviate the use of nuts, to tighten or draw the bolts moreexpeditiously than can be done by the nuts, and so secure the bolts inplace as to prevent accidental loosening, while not interfering with theremoval of said bolts.

In the drawings is shown, in Figure l, a perspective of the device asapplied to a railjoint, the parts being separated; Fig. 2, a horizontalsection showing portions of the locking-plate in two positions, and Fig.3 details of the bolt.

The bolt A is provided with a head at one end, and near the other isprovided with diametrically-opposite beveled or inclined I'ecesses B,which are also beveled across the end, forming shoulders, as shown at O,and

vleaving an end, D, beyond the said recesses.

A plate, E, with a series of inclined surfaces, F, (corresponding tothenumber of bolts nsed,) is provided with slots G, extending laterallythrough it and opening on the inclined faces, and larger and preferablycircular passages, H, communicating with the said slots and opening onthe lower portion of the incline. In cross-section the combined passageand slot resemble the shape of a key-hole.

Vhen it is desirable to form a rail-joint, the bolts A are `first passedthrough ordinary sh-plates, I, and the rails K, and then th rough thepassages H, which are of sufficient size to properly receive them andallow the shoulders Oto project somewhat above the lower portion of theinclined surface F. The said shoulders C being placed in line with theslot G, which is of about sufficient width to receive the narrowedportion of the bolt formed by the recesses B, the plate E is drivenlongitudinally, so as to bring the surface F in engagement with theshoulders O, which latter project on each side the slot, and by thewedge action the bolt is drawn as tightly as desired. The bolt havingnearly or quite reached the endand thickest portion of the slot, a pin,L, is inserted in a hole laterally across the slot to the rear of thebolt, and thus completely preventing any retrograde movement ot' thebolt or bolts, the operation of one only having been described.

From the above it is clearly evident that the use of nuts is obviated,the operation ot' securing the same expedited, and the loosening of thesame absolutely prevented. If the pins be .allowed to project slightly,the ends may be clinched.

As the construction may he more or less modified without affecting theresult accomplished, I do not wish to be confined to the exactconstruction shown, but reserve the right to vary the same consistentwith the spirit of the invention.

I attach importance to the manner of forming the shoulders on the bolt,and to the fact that there is but one shoulder on each s ide` thereof.By such a construction it will be seen that there is no obstructionoffered to the adjustment ofthe bolt, as is the case where an inclinedshoulder is formed by notching a bolt so as t0 form a shoulder onopposite sides of the Wedgekey.

` I claim- Combined with a bolt provided with lateral inclinedshoulders, a key having a correspondingly-inclined surface and adifferential slotopening on said surface, and a pin normally extendingacross said slot, substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. BABGOGK.

Witnesses:

M. D. GIBBs, PETER GOEBEL.

